Shedding mechanism for looms.



No. 775,076. PATBNTBD Nov. 15, 1904 R. GROMPTON. SHBDDING MEGHANISM PoRLooms.

APPLIGATION FILED AUG. 19, 1904.

N0 MODEL.

UNTTED STATES Patented November 15, 1904.

PATENT OFFICE.

RANDOLPH CROMPTON, OF IVORCESTER, MASSACHUSETTS, ASSIGNOR TO HIMSELF,GEORGE CROMPTON, EDVARD D. THAYER, AND IVILLIAM B. SCOFIELD, OFIVORCESTER, MASSACHUSETTS, DOING BUSINESS AS CBOMPTON -THAYER LOOMCOMPANY, OF IVORCESTER., MASSACHU- SETTS, A FIRM.

SHEDDING IVIECHANISIVI FOR LOOIVIS.

SPECIFICATION forming part of Letters Patent No. 775,076, dated Novemberl5, 1904.

Application led August 19, 1904. Serial No. 221,358. (No model.)

To /r/I/ whom, it 77mg/ concern.-

Be it known that I, RANDOLPH CRouPToN, a citizen of the United States,residing at 'orcester, county of lYorcester, and State ofLMassachusetts,have invented an Improvement in Shedding Mechanism forLooms, of which the following' description, in connection with the accompanying drawings, is a specification, like characters on the drawingsrepresenting like parts.

This invention has for its object to improve the shedding' mechanism oflooms, especially in the parts for supporting the fiexible connectionbetween the heddle-frame and the jack for moving the same.

Figure l in elevation shows a suflicient portion of a jack,heddle-frame, and loom-frame with my improvement added to enable myinvention to be understood; and Fig. 2 is a section of my improvedsheave, together with the heddle connections sustained therein.

The jack A, arch B, heddle-frame C, and sheave I) are and may be all asusual. lith these usual parts I employ a novel sheave E. (Shown insection and enlarged in Fig'. Q.) Each sheave E supports two iiexibleconnections fr and that are attached through hooks c to the jack ofwhatever construction, while the sheave D supports but oneconnectionnamely, the end 6X of the connection 1-the connection bxbeing' attached to the heddleframe in usual manner, while the lower endof the connection ff, is attached also to the heddie-frame, saidconnection being' attached to the heddle-frame near its opposite end.That the sheave E sustain two heddle connections, it is provided withtwo concentric connectionsustaining surfaces, one of said surfacesbeing, however, located at a greater distance .from the rod Z on whichsaid sheave turns than the other surface. In making the novel sheave theperiphery thereof is tapered to leave a supporting-surface, as 2, havingside walls 3, said surface between said side walls sustaining' theconnection a, which is of greater area in cross-section than the part ofthe connection 6X. To provide a supportingsurface 4 in the part of theconnection 72X, a pick 5 is formed that leads thereto, the pick opening'below the surface 2. In this way and as shown in Fig 2 I am enabled toprovide two supporting-surfaces Q and 4 for the heddle connections whichhave a common center of motion; but the surface Q is farthest removedfrom the center of the rod (Z. The surfaces 2 and 4 are adapted tosustain the two heddle connections fz and in the same vertical plane, sothat the strain on each connection is direct and the same in character,and neither connection touches the other.

The sheave shown above the heddle-frame may be duplicated below thesame, and the connection from the lower bar of the heddleframe will beconnected in usual manner with the opposite end of the jack A, said endbeing herein omitted, but shown in my application, Serial No. 212,692,liled June l5, 1904.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-'A I. The combination with a heddle-frameand flexible heddle connections attached to the frame near its oppositeend, of a sheave having a plurality of concentric connection-sustainingsurt'aces to sustain both said connections in the same vertical planeand out of Contact one with the other.

2. The combination with a heddle-frame and iiexible heddle connectionsattached to the frame near its opposite ends, of a sheave sustainingboth connections in the saine vertical plane.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

RANDOLPH CROMPTON.

Vitnesses:

JOHN C. EDWARDS, MARGARET A. DUNN.

